Modified spatial audio object coding scheme with harmonic extraction and elimination structure for interactive audio service

An interactive audio service provides audio editing functionality to users. In the service, the users can control the wanted audio objects to make their own audio sound using a spatial audio object coding (SAOC) scheme. However, the vocal object cannot be removed perfectly from the down-mix signal in Karaoke mode of the SAOC. Thus, in this paper, a modified SAOC scheme with harmonic extraction and elimination structures are proposed. The proposed scheme perfectly removes vocal object using the harmonic information of the vocal object. Subjective and objective evaluation results show the proposed scheme is superior to the conventional ones.